Question

A grasshopper can jump 2 stones with each junp. A rabbit can jump 4 stones with each jump. A frog can jump 5 stones with each jump. If all 3 animals start at number 1, what number stone is the first that all three will land on?

Answer 1

to find the answer we must take the LCM of 2,4 & 5.
LCM= 20
∴All animals will land together on the 20th stone.